Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6f660da15ad0a3e9091ca9bf066c5a6e557c183299040bab6801957e434fca57' 
  AND token = 'Rcac/EmSBdFpK2Keyg2zZPzpYKC/vhpxKJNoDt3dpwk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}